Ampulla of Vater
Paneth cell carcinoma
Reviewer: Hanni Gulwani, M.D. (see Reviewers page)
Revised: 11 December 2012, last major update August 2012
Copyright: (c) 2003-2012, PathologyOutlines.com, Inc.
● Excluding neoplasms, paneth cells usually are limited to lining epithelium of small intestine, appendix and proximal colon
● 64 year old man with virtually all neoplastic cells resembling Paneth cells (Arch Pathol Lab Med 2004;128:908)
Positive stains (granules)
● Lysozyme, PAS (weak)
End of Ampulla of Vater > Carcinoma > Paneth cell carcinoma
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